Panasonic UF-E1, Service Manual

Page: 88 / 271

UF-E1
84
4.6.2. Poor Transmitted Copy Quality
START
Yes
Make a copy.
No
No
Yes
Is the printed copy normal?
Perform a transmission test
to a reference fax unit.
Is the CIS LED Array lit?
Does CN10, PIN1, 2 and
PIN3 of the SC PCB measure
+24 VDC?(CN disconnected)
Yes
No
Yes
No
Are the scanner connectors
properly connected?
Connect them correctly.
Replace the PSU.
Does CN12,PIN6 of the
SC PCB go Low when
the scan starts?
Check CN12 on the SC
PCB and the CIS harness.
Does the problem still
occur?
Replace the CIS
The receiving unit may be
defective.
1. Replace the Scanner
Block.
2. Replace the SC PCB.
Replace the SC PCB.
Is the transmitted copy
normal?
No
Yes
Yes
No
No
1. Check CN16,17 (SC PCB)
and CN25,26 (NCU PCB)
2. Check the telephone cord.
Replace if necessary.
Does poor transmitted copy
appear when transmitting to
a specific receiver?
Telephone line quality is
poor.
END
Yes
Yes
END
No